Electro-magnet



N PETERS, Pholo-L'rlhugnpher. Wam1ngtcn. n.c.

(N0 Model.)

H. P. BROWN.

ELEGTRO MAGNET. N0. 330,463

Patented Nov. 17, 1885.

Mrz emvew.-

[12 ve1zfor:

we1' ght 011 oho arn1atnro-lV6r correspondingly inoreased. Asthearn1ature 1everis drawn up by the foroe of the magnet t-he distance between the points e and E,between which Ehe weight is suspended, is of oourse increasecl, so that the weight-oord will approach nearer a straight 1ine or a horizontal posibion, -and the retraoti1o foroe-of ehe weight 011 tho arnmture-levor will be inoreased in pmotioally ehe Sinne ratio as the foroe of the nmgnet is increased by the movement ofthe armature. The line e shou1d be made of strong cord or Wil0, so that its length will not increase by tension of ehe weight. I prefor to use a oord, but any other flexible or jointed oonneotion may be employed. By using a cord its 1ength may be very conveniently adjusted by simply winding it mound the adjnsting-sorew E.

E 1's a sot-sorew by which the adjustingscrew E nmy be fixed inposition after the apparatns is proporly adjusted. The 1notion of oho arnmtnre-levor is h'mited by the adjusbing-screws Z) Z), and the 1ine e 1'11ay'be Connected direotly Lo the armature of the n1agnet, or, in oase of a solenoid, 130 its movable oore, instead of to a 1ever o1 other device operated by such movable co1e or arn1atnro, if desired. I have, however, shown in the drawings what I deexn to be the best means of practicing my invention.

'lbe mercury-oup may be 1nado of any Suitab1o nmterial. If it is made of meta], the wire C may he conneoted to ehe cup, bub if made of glass the wire O will of course be oonnected with the mercury in bhe cup.

I olaim l. The oombination, with eleotro-magnet; A und its mov'able armoture-lever B, of a weight suspended fr'om said zmnature -1ever and from anothor divergont 01 distzmb point, substantially as speoified.

2. The means of balanoing 13110 force of an oleotro-nmgnet, oonsist-ing of a woighted 1ino oonnected ab ono end with tho movablo unnature or core of said magnet, and ab its other end toa distant-support, so that oho movement; of the armature 01 o01e of Ehe magnet; will vary the rebmctile foroe of said weighbed line, substantially as speoified.

3. The oombinuoion of electro-nmgnet A, armaturo-lever B, susponded weight E. oord e, and adjusting-screw E, substantially as specified.

4. The oombination of olootro-nmgnet A, arnmture-lever B, susponded weighb E, cord e, adjustingscrew E, and sebscrew E, substantiall y as specified.

HAROLD P. BROVVN.

\Vitnesses:

H. M. I\IUNDAY, J OI'IN W. I\IUNDAY. 

